The 2JZ left the factory as one of the strongest production blocks ever built. The Dart Iron Eagle takes that architecture and reinforces it for power levels Toyota never planned for — thicker bore walls, reinforced decks and heavier outer casing. Bored to 86.5 mm for this build.

A 90mm stroke takes this 2JZ from a 3.0 to 3.2 litres — more capacity before boost arrives. More potential across the entire power range. Machined from 4340 Billet Steel.

Toyota's original pistons were designed for 276 horsepower. Diamond's Rebel Series are rated to 2,000 — forged from 2618 aluminium with side gas ports for ring seal under sustained boost and heavy-duty H-13 tool-steel wrist pins as standard.

BoostLine's patented three-pocket design delivers 60% greater bending strength than conventional alternatives. Forged from 4340 steel. Rated to 1,500 horsepower.

The Kelford V202-C runs 264° on intake and 272° on exhaust — ground specifically for the single large-frame turbo this engine runs. The 2JZ-GTE's factory variable valve timing is retained and exploited fully, giving the engine flexibility across its entire rev range.

The factory 2JZ-GTE used twin turbochargers to deliver strong response across a broad RPM range. This build replaces them with a single Turbosmart TS-1 7275 — combining the airflow required to support up to 1,240 horsepower with a low-mass rotating assembly and dual ceramic bearing system engineered for rapid response. A divided T4 turbine housing pairs with the 6Boost split-pulse manifold to preserve exhaust-pulse energy and help drive the turbine efficiently.

Hand-built in Australia, the 6Boost split-pulse exhaust manifold is designed to make the most of the Turbosmart TS-1 7275. Its divided T4 configuration keeps the exhaust pulses separated through the manifold and into the divided turbine housing, helping preserve exhaust-gas energy and improve turbine response. 6Boost's signature merge-collector design and carefully routed runners provide a clean, direct path from the cylinder head to the turbo — built for serious power without sacrificing response.

The Kiwi CNC dual-plenum billet intake equalises manifold pressure across all six cylinders — consistent airflow from front to rear at four-digit horsepower.

Toyota's factory 2JZ uses two separate cast cam covers. The Kiwi CNC one-piece billet unit replaces both — spanning both camshafts beneath a single surface precision-machined for the sealing demands of a race engine.

The Haltech Nexus Rebel JZ provides full control over fuel, ignition, boost and VVT-i — built specifically for this platform with integrated data logging and engine protection strategies for sustained high-horsepower operation. The factory ECU's original power and emissions calibration replaced entirely.

Tom Hughes is the founder of Hughes Race Built and formerly a propulsion engineer at Rocket Lab. Every measurement, preparation and assembly decision in this build — from the first machining pass to final torque — is his.